There are some experts that may be able to assist your concern.
Just an FYI, many sign identifications, Native American, Explorer, hunter or whoever, go unanswered.
And not all signs are universal from region to another.
As it happens, I had a mountain home above Palm Springs CA where Native American signs were inscribed onto several granite outcrops...the meaning of which has never been found...They were recorded in the mid-1850's when the timber was harvested...local Museum has a pictorial display...but no clues...